Icon for a display screen



FIG. 1 is a face view of an icon for a display screen showing my newdesign, the broken line drawing of a display screen is for illustrativepurposes only and forms no part of the claimed design;

FIG. 2 is a face view thereof, the icon is shown separately for clarityof illustration; and,

FIG. 3 is a face view thereof, on an enlarged scale, the icon is shownseparately for clarity of illustration.

The ornamental design for an icon for a display screen, as shown and described. 